Imports moved to allow use built-in generators in settings

"Imports moved to allow use built-in generators in settings (import uses settings)"

Mostly of my custom fields are based in subclass of standard Django fields, so i tried:

    from model_mommy import generators
    
    MOMMY_CUSTOM_FIELDS_GEN = {
        'app.models.MyCharField': generators.gen_string,
    }

But exist one problem here: I'll be importing on settings a function from model mommy and the same depends on the settings, so when model mommy tries import the settings during my import on settings.py the same is not configured and raises an error.

    Error occurs after starting the tests in django, with DATABASES and MOMMY_CUSTOM_FIELDS_GEN 
    in local_settings. It tries to load the database, but the same has not been loaded yet and 
    throws an exception.